The 2026 Longines HydroConquest Ref. L3.788.4.70.6 is part of the redesigned HydroConquest collection, combining professional dive-watch functionality with a refined, contemporary appearance. Its black lacquered dial and slate grey ceramic bezel create the understated color combination often nicknamed "Bruce Wayne" by watch enthusiasts.

The 42mm stainless steel case features a unidirectional rotating bezel, scratch-resistant sapphire crystal, screw-down crown, and 300-meter water resistance. The stainless steel Milanese mesh bracelet is equipped with a double-security folding clasp and micro-adjustment system, offering a distinctive alternative to traditional steel bracelets.

Powered by the Longines Calibre L888.5 automatic movement, the watch features a silicon balance spring, operates at 25,200 vibrations per hour, and delivers up to 72 hours of power reserve.

This 2026 example is offered brand new in box with its complete full set.

Brand: Longines
Collection: HydroConquest
Reference: L3.788.4.70.6 / L37884706
Year: 2026
Case Size: 42mm
Case Material: Stainless Steel
Dial: Black Lacquered
Bezel: Slate Grey Ceramic, Unidirectional Rotating
Movement: Longines Calibre L888.5 Automatic
Power Reserve: Up to 72 Hours
Frequency: 25,200 VPH
Crystal: Sapphire With Anti-Reflective Coating
Functions: Hours, Minutes, Seconds, Date
Water Resistance: 300 Meters
Bracelet: Stainless Steel Milanese Mesh
Clasp: Double-Security Folding Clasp With Micro-Adjustment
Includes: Full Set
Condition: Brand New in Box (BNIB).